Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  NGC 5477
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M101, Ray Heinle
M101
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M101

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Description

In this M101 I combined two data sets, one from 1 June 2014 and one from 9 May 2016. I did the stacking using the Drizzle algorithm to double the pixel resolution. This produced a single stacked file with twice the pixel resolution, yet Drizzle leaves the summed data set convolved with the original coarse grid. This I removed using wavelets in the PixInsight Multiscale Transform.

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M101, Ray Heinle